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ST307-V2-350-B

The Eaton ST307-V2-350-B is a heavy-duty, welded rod hydraulic cylinder from Eaton's robust ST (Super Duty) series. It is engineered for the most demanding applications in mobile and industrial machinery where extreme loads, harsh environments, and long service life are critical.

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Parameter Specification / Description Manufacturer & Model Eaton ST307-V2-350-B Series ST (Super Duty Welded Cylinder) Bore Size 307 mm (12.09 inches) (ST307中的“307”即代表缸径) Rod Diameter Standard or Heavy Duty rod size. For a 307mm bore, typical rod sizes range from 180mm to 220mm (e.g., ST307 often uses a 200mm rod). Must verify from drawing. Stroke 350 mm (13.78 inches) Rod End Style (V2) Cross-Tube Trunnion (Clevis). Features a through-hole for a large-diameter pin, integrated grease zerks, and hardened bearing surfaces. Mounting Style (Head End) Typically fixed trunnion or welded clevis. The “ST” series head end is often a matching trunnion. Exact style defined by full model code. Operating Pressure (Rated) Up to 350 bar (5,000 psi) Test Pressure Typically 1.5 x Rated Pressure (~525 bar / 7,600 psi) Piston Seal System High-performance polyurethane or composite seals designed for high pressure and low friction. Rod Seal & Wiper Multi-stage rod sealing system including buffer seal, primary seal, and heavy-duty scraper/wiper to exclude contaminants. Rod Surface Hard Chrome Plated to specification for superior corrosion and wear resistance. Cushions (Optional) May be available with internal plunger-type cushions at one or both ends to decelerate the piston. Not standard on all models. Port Size & Type Large SAE or ISO flange ports (e.g., SAE 2” 6000 psi flange). The “-B” suffix often defines port location (side or front). Materials Cylinder Tube: High-tensile strength steel, honed ID. Piston Rod: High-strength steel, hard chrome plated. Head & Cap: High-grade forged or cast steel.